Portenstein M T, B General Building Contractor in Oak View, CA
Portenstein M T operating as a sole owner holds California contractor license #490834, which is currently expired (lapsed Jul 31, 2026) and not valid to contract until it is renewed. First issued in 1986, the license has been on the CSLB roster for 40 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Western Surety Company and an exempt workers' compensation status (no employees on payroll). The business is based in Oak View, in Ventura County, California.
- License Number
- 490834
- Issued
- May 1, 1986
- Status
- CLEAR
- Expires
- Jul 31, 2026
- Entity
- Sole Owner
- Surety
- Western Surety Company
- Bond Number
- 66344184
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jun 25, 2024
- Expires
- —
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Portenstein M T licensed in California?
Portenstein M T previously held California Contractors State License Board license number 490834, but the license expired on July 31, 2026 and is not currently valid. It was first issued on May 1, 1986.
What does Portenstein M T specialize in?
Portenstein M T is licensed for one CSLB classification: B General Building Contractor.
Where is Portenstein M T headquartered?
Portenstein M T is headquartered at Po Box 472, Oak View, CA 93022, in Ventura County, California.
Does Portenstein M T have an active surety bond on file with CSLB?
Yes. Portenstein M T has an active California contractor surety bond filed with Western Surety Company.
Does Portenstein M T carry workers' compensation coverage?
Portenstein M T reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Portenstein M T's contractor license?
You can verify Portenstein M T's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=490834.
- License issuedMay 1, 1986
- Bond activeJan 1, 2023
- WC coverage startsJun 25, 2024
- License expiredJul 31, 2026
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